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St. Lawrence County, New York facts for kids

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St. Lawrence County
The Raquette River in Colton, New York
Flag of St. Lawrence County
Official seal of St. Lawrence County
Map of New York highlighting St. Lawrence County
Location within the U.S. state of New York
Map of the United States highlighting New York
New York's location within the U.S.
Country  United States
State  New York
Founded 1802 (1802)
Named for Saint Lawrence River
Seat Canton
 • Total 2,821 sq mi (7,310 km2)
 • Land 2,680 sq mi (6,900 km2)
 • Water 141 sq mi (370 km2)  5.0%
 • Total 108,505
 • Density 40.5/sq mi (15.6/km2)
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional district 21st

St. Lawrence County is a county in the U.S. state of New York. As of the 2020 census, the population was 108,505.The county seat is Canton. The county is named for the Saint Lawrence River, which in turn was named for the Christian saint Lawrence of Rome, on whose feast day the river was visited by French explorer Jacques Cartier.

St. Lawrence County comprises the Ogdensburg-Massena, NY Micropolitan Statistical Area and is New York's largest county by area.


Historical population
Census Pop.
1810 7,885
1820 16,037 103.4%
1830 36,354 126.7%
1840 56,706 56.0%
1850 68,617 21.0%
1860 83,689 22.0%
1870 84,826 1.4%
1880 85,997 1.4%
1890 85,048 −1.1%
1900 89,083 4.7%
1910 89,005 −0.1%
1920 88,121 −1.0%
1930 90,960 3.2%
1940 91,098 0.2%
1950 98,897 8.6%
1960 111,239 12.5%
1970 111,991 0.7%
1980 114,254 2.0%
1990 111,974 −2.0%
2000 111,931 0.0%
2010 111,944 0.0%
2020 108,505 −3.1%
U.S. Decennial Census
1790–1960 1900–1990
1990–2000 2010–2020

As of the census of 2000, there were 113,931 people, 40,506 households, and 26,936 families residing in the county. The population density was 42 inhabitants per square mile (16/km2). There were 49,721 housing units at an average density of 18/sq mi (6.9/km2). The racial makeup of the county was 94.51% White, 2.38% African American, 0.87% Native American, 0.71% Asian, 0.03% Pacific Islander, 0.69% from other races, and 0.51% from two or more races. Hispanic or Latino of any race were 1.79% of the population. 16.9% were of French, 16.1% Irish, 13.9% American, 11.6% English, 8.1% French Canadian, 7.9% German and 7.6% Italian ancestry according to Census 2000. 95.6% spoke English, 1.2% Spanish and 3.2% French as their first language.

There were 40,506 households, out of which 31.80% had children under the age of 18 living with them, 51.50% were married couples living together, 10.30% had a female householder with no husband present, and 33.50% were non-families. 26.50% of all households were made up of individuals, and 11.20% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 2.99.

In the county, the population was spread out, with 23.40% under the age of 18, 13.80% from 18 to 24, 27.40% from 25 to 44, 22.40% from 45 to 64, and 13.00% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 103.30 males. For every 100 females age 18 and over, there were 102.10 males.

The median income for a household in the county was $30,356, and the median income for a family was $34,510. Males had a median income of $30,135 versus $24,253 for females. The per capita income for the county was $14,728. About 12.30% of families and 19.90% of the population were below the poverty line, including 21.30% of those under age 18 and 10.30% of those age 65 or over.


School districts

There are 17 school districts centered in St. Lawrence County, all under the jurisdiction of the St. Lawrence-Lewis BOCES Supervisory District along with Harrisville Central School District in Lewis County, New York.

  • Brasher Falls Central School District: St. Lawrence Central School, Brasher Falls
  • Canton Central School District: Hugh Williams Senior High School, Canton
  • Clifton-Fine Central School District: Clifton-Fine Central School, Star Lake
  • Colton-Pierrepont Central School District: Colton-Pierrepont Central School, Colton
  • Edwards-Knox Central School District: Edwards-Knox Central School, Russell
  • Gouverneur Central School District: Gouverneur Junior/Senior High School, Gouverneur
  • Hammond Central School District: Hammond Central School, Hammond
  • Hermon-Dekalb Central School District: Hermon-Dekalb Central School, Dekalb Junction
  • Heuvelton Central School District: Heuvelton Central School, Heuvelton
  • Lisbon Central School District: Lisbon Central School, Lisbon
  • Madrid-Waddington Central School District: Madrid-Waddington Central School, Madrid
  • Massena Central School District: Massena Senior High School, Massena
  • Morristown Central School District: Morristown Central School, Morristown
  • Norwood-Norfolk Central School District: Norwood-Norfolk Central School, Norfolk
  • Ogdensburg City School District: Ogdensburg Free Academy, Ogdensburg
  • Parishville-Hopkinton Central School District: Parishville-Hopkinton Central School, Parishville
  • Potsdam Central School District: Potsdam High School, Potsdam

All public high schools in St. Lawrence County compete in the New York State Public High School Athletic Association Section X Northern Athletic Conference.

Universities and colleges

Saint Lawrence County is home to St. Lawrence University, State University of New York at Potsdam, Clarkson University, the SUNY-ESF Ranger School, and the State University of New York at Canton.



The following public use airports are located in the county:

  • Massena International Airport (MSS) – Massena
  • Ogdensburg International Airport (OGS) – Ogdensburg
  • Potsdam Municipal Airport (PTD) – Potsdam
  • Moores Airport (1E8) – Degrasse

See also

Kids robot.svg In Spanish: Condado de St. Lawrence (Nueva York) para niños

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